:root{--bg: #fbfbfa;--text: #141413;--muted: #6b6a66;--faint: #b0afab;--line: rgba(0, 0, 0, .08);--line-strong: rgba(0, 0, 0, .18);--track: #d6d4ce;--again: #b03a2e;--hard: #9a6414;--good: #2e7d46;--easy: #141413;--invert-text: #fbfbfa;color-scheme:light}:root[data-theme=dark]{--bg: #0e0e0d;--text: #f5f4f1;--muted: #9c9b96;--faint: #5e5d59;--line: rgba(255, 255, 255, .1);--line-strong: rgba(255, 255, 255, .24);--track: #3a3a38;--again: #ff6961;--hard: #e0a33c;--good: #5be07e;--easy: #f5f4f1;--invert-text: #0e0e0d;color-scheme:dark}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,SF Pro Text,system-ui,Segoe UI,Roboto,sans-serif;font-size:17px;-webkit-font-smoothing:antialiased;overscroll-behavior-y:none}button{font:inherit;color:inherit;background:none;border:none;padding:0;cursor:pointer}a{color:inherit;text-decoration:none}.app{height:100%;max-width:560px;margin:0 auto;display:flex;flex-direction:column;position:relative;overflow:hidden}.scroll{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch}.title-lg{font-size:34px;font-weight:600;letter-spacing:-.025em}.eyebrow{font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--faint)}.label-caps{font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--faint)}.num{font-variant-numeric:tabular-nums}.muted{color:var(--muted)}.faint{color:var(--faint)}.page{padding:max(env(safe-area-inset-top),20px) 24px 0}.row-between{display:flex;align-items:center;justify-content:space-between}.list-row{display:flex;align-items:center;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);width:100%;text-align:left}.stat-row{display:flex;justify-content:space-between;padding:13px 0;border-top:1px solid var(--line);font-size:15px}.stat-row:last-child{border-bottom:1px solid var(--line)}.btn-primary{display:block;width:100%;padding:15px;border-radius:14px;background:var(--text);color:var(--invert-text);font-size:17px;font-weight:590;text-align:center}.btn-primary:disabled{opacity:.35}.btn-pill{padding:11px 22px;border-radius:9999px;background:var(--text);color:var(--invert-text);font-size:15px;font-weight:590}.tabbar{display:flex;justify-content:space-between;padding:16px 24px calc(max(env(safe-area-inset-bottom),16px) + 12px);border-top:1px solid var(--line)}.tabbar a{font-size:13px;color:var(--faint)}.tabbar a.active{font-weight:590;color:var(--text)}.segbar{display:flex;gap:3px;height:6px}.segbar>div{border-radius:3px}.study{height:100%;display:flex;flex-direction:column;position:relative;overflow:hidden}.progress{position:absolute;top:0;left:0;height:2px;background:var(--text);transition:width .3s;z-index:2}.study-head{padding:max(env(safe-area-inset-top),20px) 24px 0;display:flex;align-items:center;justify-content:space-between;position:relative;z-index:1}.audio-toggle{font-size:12px;font-weight:590;letter-spacing:.04em;text-transform:uppercase;color:var(--text);border-bottom:1px solid var(--line-strong);padding-bottom:2px}.card-body{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:0 28px;gap:20px;position:relative;overflow-y:auto;z-index:1;cursor:pointer}.side-label{font-size:14px;letter-spacing:.08em;text-transform:uppercase;color:var(--faint)}.card-body--expanded{justify-content:flex-start;padding-top:24px;padding-bottom:24px}.head-controls{display:flex;align-items:center;gap:12px}.back-link{font-size:13px;color:var(--muted);white-space:nowrap}.card-actions{display:flex;gap:14px;margin-top:6px;flex:none}.circle-btn{width:54px;height:54px;border-radius:9999px;border:1px solid var(--line-strong);display:flex;align-items:center;justify-content:center;flex:none;transition:background .18s,color .18s,border-color .18s}.circle-btn:disabled{opacity:.4}.circle-btn--on{background:var(--text);border-color:var(--text);color:var(--invert-text)}.circle-btn-label{font-size:13px;font-weight:590;letter-spacing:.04em}.card-ipa{font-size:17px;color:var(--muted)}.card-note{font-size:14px;line-height:1.5;color:var(--faint);text-align:center;max-width:300px;text-wrap:pretty}.ai-panel{width:100%;display:flex;flex-direction:column;gap:26px;padding-top:16px;border-top:1px solid var(--line);text-align:left}.ai-panel section{display:flex;flex-direction:column;gap:8px}.ai-translations{font-size:17px;line-height:1.45;color:var(--text)}.ai-note{font-size:13px;line-height:1.5;color:var(--faint);text-wrap:pretty}.ai-examples{display:flex;flex-direction:column;gap:14px}.ai-example{display:flex;flex-direction:column;gap:4px;padding-bottom:14px;border-bottom:1px solid var(--line)}.ai-example:last-child{border-bottom:none;padding-bottom:0}.ai-example-en{font-size:16px;line-height:1.45;text-wrap:pretty}.ai-example-ru{font-size:14px;line-height:1.45;color:var(--faint);text-wrap:pretty}.ai-skeleton{width:100%;display:flex;flex-direction:column;gap:10px;padding-top:14px}.ai-skeleton>div:not(.faint){height:12px;border-radius:3px;background:var(--line)}.wave{display:flex;align-items:center;gap:3.5px;height:18px}.wave>i{width:3px;height:18px;border-radius:2px;background:var(--text);animation:wv .9s ease-in-out infinite;animation-play-state:paused;transform:scaleY(.35)}.wave>i:nth-child(2){animation-delay:.15s}.wave>i:nth-child(3){animation-delay:.3s}.wave.playing>i{animation-play-state:running}@keyframes wv{0%,to{transform:scaleY(.35)}50%{transform:scaleY(1)}}.grades{display:flex;gap:6px;justify-content:center;transition:opacity .25s}.grade{display:flex;flex-direction:column;align-items:center;gap:3px;min-width:64px;padding:6px 4px}.grade span:first-child{font-size:15px;font-weight:590}.grade span:last-child{font-size:11px;color:var(--faint)}.study-foot{padding:0 20px calc(max(env(safe-area-inset-bottom),16px) + 18px);display:flex;flex-direction:column;gap:14px;align-items:center;position:relative;z-index:1}.note{text-align:center;max-width:100%;line-height:1.5;color:var(--muted);font-size:19px;text-wrap:pretty}.note :is(h1,h2,h3){margin:0 0 8px}.note div,.note p{margin:0 0 6px}.note div:empty,.note p:empty{display:none;margin:0}.note hr{border:none;border-top:1px solid var(--line);margin:16px 0;width:120px}.note hr.sep{width:56px;margin:10px auto;border-top-color:var(--line)}.note img{max-width:100%;height:auto;border-radius:10px;margin:8px 0}.note b,.note strong{font-weight:600;color:var(--text)}.note .word,.note .front{display:block;font-size:46px;font-weight:590;letter-spacing:-.025em;line-height:1.05;color:var(--text);text-wrap:balance;margin-bottom:4px}.note .cloze{color:var(--good);font-weight:600}.note .meaning,.note .translation{color:var(--text);font-size:25px;font-weight:560;letter-spacing:-.01em;line-height:1.3;text-wrap:balance}.note .definition{color:var(--muted)}.note .sentence{margin-top:20px}.note .example{color:var(--text);font-size:18px;font-style:italic}.note .example-ru{color:var(--muted);font-size:16px}.note--front .word,.note--front .front{font-size:54px}.dropzone{border:1px dashed var(--line-strong);border-radius:18px;padding:38px 20px;display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center;transition:border-color .15s,background .15s}.dropzone.over{border-color:var(--text);background:var(--line)}.bar{height:3px;background:var(--line);overflow:hidden}.bar>div{height:100%;background:var(--text);transition:width .3s}.mono{font-family:ui-monospace,Menlo,monospace;font-size:14px}.center-screen{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:0 34px;text-align:center}.field{width:100%;padding:14px 16px;border-radius:14px;border:1px solid var(--line-strong);background:transparent;color:var(--text);font-size:17px}.field:focus{outline:none;border-color:var(--text)}.error{color:var(--again);font-size:14px}.spinner{width:22px;height:22px;border:2px solid var(--line);border-top-color:var(--text);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.chart{height:160px;display:flex;align-items:flex-end;gap:10px}.chart-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:10px;justify-content:flex-end}.chart-col>div:first-child{width:100%;background:var(--text);min-height:2px}.chart-col.today>div:first-child{background:var(--track)}@media(prefers-reduced-motion:reduce){*{animation-duration:.01ms!important;transition-duration:.01ms!important}}.sheet{position:absolute;top:0;right:0;bottom:0;left:0;z-index:10;background:var(--bg);display:flex;flex-direction:column;-webkit-user-select:text;user-select:text}.sheet-head{padding:max(env(safe-area-inset-top),20px) 24px 0;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:15px}.sheet-body{padding:30px 24px 24px;display:flex;flex-direction:column;gap:24px}.sheet-foot{padding:16px 24px calc(max(env(safe-area-inset-bottom),16px) + 18px);border-top:1px solid var(--line);display:flex;justify-content:center}.edit-field{display:flex;flex-direction:column;gap:8px}.line-input{width:100%;border:none;border-bottom:1px solid var(--line-strong);background:transparent;color:var(--text);font:inherit;font-size:17px;line-height:1.45;padding:0 0 10px;resize:none;overflow:hidden}.line-input:focus{outline:none;border-bottom-color:var(--text)}.line-input::placeholder{color:var(--faint)}.line-input--lg{font-size:22px;font-weight:590;letter-spacing:-.02em}.line-input--flush{border-bottom:none;padding-bottom:0;font-size:15px}.line-input--sub{font-size:13px;color:var(--faint)}.example-row{display:flex;align-items:flex-start;gap:12px;padding-bottom:13px;border-bottom:1px solid var(--line)}.example-fields{flex:1;display:flex;flex-direction:column;gap:3px;min-width:0}.example-remove{font-size:15px;color:var(--faint);padding:2px 4px}.pill-row{display:flex;flex-wrap:wrap;gap:10px;padding-top:2px}.btn-outline{padding:10px 16px;border-radius:9999px;border:1px solid var(--line-strong);font-size:14px;font-weight:590;color:var(--text)}.btn-outline:disabled{opacity:.4}.clamp-1,.clamp-2{overflow:hidden;display:-webkit-box;-webkit-box-orient:vertical;white-space:pre-line}.clamp-1{-webkit-line-clamp:1}.clamp-2{-webkit-line-clamp:2}.check{flex:none;width:26px;height:26px;border-radius:9999px;border:1.5px solid var(--line-strong);display:flex;align-items:center;justify-content:center}.check--on{background:var(--text);border-color:var(--text);color:var(--invert-text)}.select-bar{position:fixed;left:0;right:0;bottom:0;z-index:5;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 20px calc(14px + env(safe-area-inset-bottom));background:var(--bg);border-top:1px solid var(--line)}.btn-danger{padding:12px 24px;border-radius:9999px;background:var(--again);color:#fff;font-size:16px;font-weight:590}.btn-danger:disabled{opacity:.35}.voice-row{display:flex;align-items:center;gap:10px;margin-top:8px}.voice-row select{flex:1;min-width:0;padding:11px 12px;border-radius:12px;border:1px solid var(--line-strong);background:var(--bg);color:var(--text);font-size:16px}